Okay, Imma do the first problem.
Slope:
We can do the equation to find the slope
Y2 - Y1
______
X2 - X1
So what that means is we take two points. ( 10, 42) and ( 20, 44) and we sub it into our equation with (10, 42) being our X1 and Y1 and (20, 44) being X2 and Y2.
And so...
20 - 10 10
_______ = ________
44 - 42 2
10/ 2 is gonna be 5
So our rate of change (slope) is 5
Y- int is 40. Why? Because (0, 40) is where the line would touch the y intercept.
Equation: y = 5x + 40
Hope I helped :)
